$.ajaxPrefilter(function(options) {
    options.url = "http://api-breakingnews-web.itheima.net" + options.url
        //加上请求头
    if (options.url.indexOf("/my/") !== -1) {
        options.headers = {
            Authorization: localStorage.getItem("token") || ""
        }
    }
    options.complete = function(res) {
        if (res.responseJSON.status === 1 && res.responseJSON.message === "身份认证失败！") {
            location.href = "/login.html";
            localStorage.removeItem("token")
        }
    }
})